The utility model provides an efficiency diagnostic platform of mill, includes control system, monitor terminal, intelligent Mobile Terminal, earth -leakage protector, memory cell. Control system adopts 3000 model PLC of SIMENS, adopts the liquid crystal to touch screen display and shows the ware. Monitor terminal embeds the GPRS module, is used for carrying out real -time communication with the interior application software of control system. Intelligent Mobile Terminal is smart mobile phone or panel computer, installs this control system APP in smart mobile phone or panel computer. Earth -leakage protector all has a setting at every equipment of mill, establishes ties between power supply line and every mill's equipment. Memory cell is nonvolatile memory, monitor terminal installs at theammeter incasement. This platform can real -time supervision enterprise the power consumption condition, can save the power consumption expense for the enterprise, be the smart power grids least significant end and the direct linkage 's of enterprise link, can realize the energy consumption monitor of enterprise and power consumption optimum management, improve the device availability, optimize the power consumption scheme, improve the dispatch level of managing.